22+ hour, 35+ min ago   (134+ words) Choosing what orbit to put a satellite in always comes with trade-offs. When it comes to Very Low Earth Orbit (VLEO), between 100-450 km, there are distinct advantages. Remote sensing cameras can take better pictures, comms and radar require less power,…...

1+ day, 11+ hour ago   (185+ words) Light could only travel freely in the Universe after cosmic reionization. Before that, neutral hydrogen stopped photons from travelling. The JWST has found evidence of an overdensity of galaxies carving out a bubble of reionization. Is this how it all…...

2+ day, 14+ hour ago   (417+ words) In 2009, astronomers using the Fermi Gamma-ray Space Telescope discovered an excess of energy in the Milky Way's galactic center. Deep observations found no source for the energy, called the Galactic Center GeV Excess (GCE). What's generating it? Research in Physical…...

3+ day, 15+ hour ago   (862+ words) A distant star has captured astronomers' attention over the past decade, teasing them with indications that it will soon explode as a supernova. But new research shows that something else entirely is behind the star's outbursts. Rather than an impending…...

3+ day, 17+ hour ago   (641+ words) Astronomers refine their understanding of gas movement by observing it in more types of environments, and in more complex environments. Researchers in Japan recently used CO observations to map gas in an especially complex and unique environment: Stephan's Quintet. The…...

4+ day, 17+ hour ago   (543+ words) The Giant Impact Hypothesis says that about 4.5 billion years ago, a Mars-sized world named Theia slammed into the young Earth. The cataclysmic impact sent debris into a torus orbiting Earth, and out of that material the Moon formed. The hypothesis…...

5+ day, 9+ hour ago   (179+ words) Say what you want about the changes to the space industry that’s happened over the past 10-20 years, but one thing is for certain - there are a lot more people that have access to space now than there ever has been…...

6+ day, 19+ hour ago   (31+ words) Future gravitational wave observatories will be able to see the gravitational waves of close-orbiting binary stars. A newly studied white dwarf system could be one of the first systems we observe....

6+ day, 21+ hour ago   (1040+ words) Out in the solar system, there is a giant rippling curtain of charged particles that is actually the largest structure in our solar system. Known as the Heliospheric Current Sheet (HCS), it marks the spot where the sun flips its…...

1+ week, 1+ day ago   (41+ words) Pulsar Timing Arrays have been used to observe the background of gravitational waves in our galaxy. We aren't certain of their origin, but a new study shows a strong source could be early supermassive giants known as dark stars....